In one embodiment, a method includes storing one or more graphs, each graph comprising one or more nodes arranged in a hierarchical format, each node representing one or more data items; accessing a query requesting one or more specific data items in the graphs, the query being expressed in a language having a hierarchical format; retrieving the specific data items from the graphs; arranging the specific data items in a hierarchical format; and outputting the specific data items in response to the query.

Interactive infographic about the evolution of browsers and the web. This infographic features major web browsers since 1993 such as Mosaic, Netscape, Opera, Internet Explorer, Safari, Firefox, and Chrome, as well as key developments in web technologies such as HTML, CSS, and JavaScript.